First results of the two-phase argon avalanche detector performance with CsI photocathode

Details First results of the two-phase argon avalanche detector performance with CsI photocathode First results of the two-phase argon avalanche detector performance with CsI photocathode

2007-02-27

arxiv.org/abs/physics/0702237v1

Nucl.Instrum.Meth.A581:241-245,2007

Physics

Instrumentation and Detectors

4 pages, 8 figures. Presented at the 11th Vienna Conference on Instrumentation, Feb 19-24, 2007

Scientific paper

10.1016/j.nima.2007.07.086

The performance of a two-phase Ar avalanche detector with CsI photocathode was studied, with regard to potential application in coherent neutrino-nucleus scattering and dark matter search experiments. The detector comprised a 1 cm thick liquid Ar layer and a triple-GEM multiplier operated in the saturated vapor above the liquid phase; the CsI photocathode was deposited on the first GEM. Successful detection of both primary scintillation and ionization signals, produced by beta-particles in liquid Ar, has for the first time been demonstrated in the two-phase avalanche mode.

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